Let's get this math done. We have 394 and we're going to multiply it by 340. This is the same as taking 394 and adding it to itself 340 times.
Step 1: 0 + 394 = 394
Step 2: 394 + 394 = 788
Step 3: 788 + 394 = 1182
Step 4: 1182 + 394 = 1576
Step 5: 1576 + 394 = 1970
Step 6: 1970 + 394 = 2364
Step 7: 2364 + 394 = 2758
Step 8: 2758 + 394 = 3152
Step 9: 3152 + 394 = 3546
Step 10: 3546 + 394 = 3940
Step 11: 3940 + 394 = 4334
Step 12: 4334 + 394 = 4728
Step 13: 4728 + 394 = 5122
Step 14: 5122 + 394 = 5516
Step 15: 5516 + 394 = 5910
Step 16: 5910 + 394 = 6304
Step 17: 6304 + 394 = 6698
Step 18: 6698 + 394 = 7092
Step 19: 7092 + 394 = 7486
Step 20: 7486 + 394 = 7880
Step 21: 7880 + 394 = 8274
Step 22: 8274 + 394 = 8668
Step 23: 8668 + 394 = 9062
Step 24: 9062 + 394 = 9456
Step 25: 9456 + 394 = 9850
Step 26: 9850 + 394 = 10244
Step 27: 10244 + 394 = 10638
Step 28: 10638 + 394 = 11032
Step 29: 11032 + 394 = 11426
Step 30: 11426 + 394 = 11820
Step 31: 11820 + 394 = 12214
Step 32: 12214 + 394 = 12608
Step 33: 12608 + 394 = 13002
Step 34: 13002 + 394 = 13396
Step 35: 13396 + 394 = 13790
Step 36: 13790 + 394 = 14184
Step 37: 14184 + 394 = 14578
Step 38: 14578 + 394 = 14972
Step 39: 14972 + 394 = 15366
Step 40: 15366 + 394 = 15760
Step 41: 15760 + 394 = 16154
Step 42: 16154 + 394 = 16548
Step 43: 16548 + 394 = 16942
Step 44: 16942 + 394 = 17336
Step 45: 17336 + 394 = 17730
Step 46: 17730 + 394 = 18124
Step 47: 18124 + 394 = 18518
Step 48: 18518 + 394 = 18912
Step 49: 18912 + 394 = 19306
Step 50: 19306 + 394 = 19700
Step 51: 19700 + 394 = 20094
Step 52: 20094 + 394 = 20488
Step 53: 20488 + 394 = 20882
Step 54: 20882 + 394 = 21276
Step 55: 21276 + 394 = 21670
Step 56: 21670 + 394 = 22064
Step 57: 22064 + 394 = 22458
Step 58: 22458 + 394 = 22852
Step 59: 22852 + 394 = 23246
Step 60: 23246 + 394 = 23640
Step 61: 23640 + 394 = 24034
Step 62: 24034 + 394 = 24428
Step 63: 24428 + 394 = 24822
Step 64: 24822 + 394 = 25216
Step 65: 25216 + 394 = 25610
Step 66: 25610 + 394 = 26004
Step 67: 26004 + 394 = 26398
Step 68: 26398 + 394 = 26792
Step 69: 26792 + 394 = 27186
Step 70: 27186 + 394 = 27580
Step 71: 27580 + 394 = 27974
Step 72: 27974 + 394 = 28368
Step 73: 28368 + 394 = 28762
Step 74: 28762 + 394 = 29156
Step 75: 29156 + 394 = 29550
Step 76: 29550 + 394 = 29944
Step 77: 29944 + 394 = 30338
Step 78: 30338 + 394 = 30732
Step 79: 30732 + 394 = 31126
Step 80: 31126 + 394 = 31520
Step 81: 31520 + 394 = 31914
Step 82: 31914 + 394 = 32308
Step 83: 32308 + 394 = 32702
Step 84: 32702 + 394 = 33096
Step 85: 33096 + 394 = 33490
Step 86: 33490 + 394 = 33884
Step 87: 33884 + 394 = 34278
Step 88: 34278 + 394 = 34672
Step 89: 34672 + 394 = 35066
Step 90: 35066 + 394 = 35460
Step 91: 35460 + 394 = 35854
Step 92: 35854 + 394 = 36248
Step 93: 36248 + 394 = 36642
Step 94: 36642 + 394 = 37036
Step 95: 37036 + 394 = 37430
Step 96: 37430 + 394 = 37824
Step 97: 37824 + 394 = 38218
Step 98: 38218 + 394 = 38612
Step 99: 38612 + 394 = 39006
Step 100: 39006 + 394 = 39400
Step 101: 39400 + 394 = 39794
Step 102: 39794 + 394 = 40188
Step 103: 40188 + 394 = 40582
Step 104: 40582 + 394 = 40976
Step 105: 40976 + 394 = 41370
Step 106: 41370 + 394 = 41764
Step 107: 41764 + 394 = 42158
Step 108: 42158 + 394 = 42552
Step 109: 42552 + 394 = 42946
Step 110: 42946 + 394 = 43340
Step 111: 43340 + 394 = 43734
Step 112: 43734 + 394 = 44128
Step 113: 44128 + 394 = 44522
Step 114: 44522 + 394 = 44916
Step 115: 44916 + 394 = 45310
Step 116: 45310 + 394 = 45704
Step 117: 45704 + 394 = 46098
Step 118: 46098 + 394 = 46492
Step 119: 46492 + 394 = 46886
Step 120: 46886 + 394 = 47280
Step 121: 47280 + 394 = 47674
Step 122: 47674 + 394 = 48068
Step 123: 48068 + 394 = 48462
Step 124: 48462 + 394 = 48856
Step 125: 48856 + 394 = 49250
Step 126: 49250 + 394 = 49644
Step 127: 49644 + 394 = 50038
Step 128: 50038 + 394 = 50432
Step 129: 50432 + 394 = 50826
Step 130: 50826 + 394 = 51220
Step 131: 51220 + 394 = 51614
Step 132: 51614 + 394 = 52008
Step 133: 52008 + 394 = 52402
Step 134: 52402 + 394 = 52796
Step 135: 52796 + 394 = 53190
Step 136: 53190 + 394 = 53584
Step 137: 53584 + 394 = 53978
Step 138: 53978 + 394 = 54372
Step 139: 54372 + 394 = 54766
Step 140: 54766 + 394 = 55160
Step 141: 55160 + 394 = 55554
Step 142: 55554 + 394 = 55948
Step 143: 55948 + 394 = 56342
Step 144: 56342 + 394 = 56736
Step 145: 56736 + 394 = 57130
Step 146: 57130 + 394 = 57524
Step 147: 57524 + 394 = 57918
Step 148: 57918 + 394 = 58312
Step 149: 58312 + 394 = 58706
Step 150: 58706 + 394 = 59100
Step 151: 59100 + 394 = 59494
Step 152: 59494 + 394 = 59888
Step 153: 59888 + 394 = 60282
Step 154: 60282 + 394 = 60676
Step 155: 60676 + 394 = 61070
Step 156: 61070 + 394 = 61464
Step 157: 61464 + 394 = 61858
Step 158: 61858 + 394 = 62252
Step 159: 62252 + 394 = 62646
Step 160: 62646 + 394 = 63040
Step 161: 63040 + 394 = 63434
Step 162: 63434 + 394 = 63828
Step 163: 63828 + 394 = 64222
Step 164: 64222 + 394 = 64616
Step 165: 64616 + 394 = 65010
Step 166: 65010 + 394 = 65404
Step 167: 65404 + 394 = 65798
Step 168: 65798 + 394 = 66192
Step 169: 66192 + 394 = 66586
Step 170: 66586 + 394 = 66980
Step 171: 66980 + 394 = 67374
Step 172: 67374 + 394 = 67768
Step 173: 67768 + 394 = 68162
Step 174: 68162 + 394 = 68556
Step 175: 68556 + 394 = 68950
Step 176: 68950 + 394 = 69344
Step 177: 69344 + 394 = 69738
Step 178: 69738 + 394 = 70132
Step 179: 70132 + 394 = 70526
Step 180: 70526 + 394 = 70920
Step 181: 70920 + 394 = 71314
Step 182: 71314 + 394 = 71708
Step 183: 71708 + 394 = 72102
Step 184: 72102 + 394 = 72496
Step 185: 72496 + 394 = 72890
Step 186: 72890 + 394 = 73284
Step 187: 73284 + 394 = 73678
Step 188: 73678 + 394 = 74072
Step 189: 74072 + 394 = 74466
Step 190: 74466 + 394 = 74860
Step 191: 74860 + 394 = 75254
Step 192: 75254 + 394 = 75648
Step 193: 75648 + 394 = 76042
Step 194: 76042 + 394 = 76436
Step 195: 76436 + 394 = 76830
Step 196: 76830 + 394 = 77224
Step 197: 77224 + 394 = 77618
Step 198: 77618 + 394 = 78012
Step 199: 78012 + 394 = 78406
Step 200: 78406 + 394 = 78800
Step 201: 78800 + 394 = 79194
Step 202: 79194 + 394 = 79588
Step 203: 79588 + 394 = 79982
Step 204: 79982 + 394 = 80376
Step 205: 80376 + 394 = 80770
Step 206: 80770 + 394 = 81164
Step 207: 81164 + 394 = 81558
Step 208: 81558 + 394 = 81952
Step 209: 81952 + 394 = 82346
Step 210: 82346 + 394 = 82740
Step 211: 82740 + 394 = 83134
Step 212: 83134 + 394 = 83528
Step 213: 83528 + 394 = 83922
Step 214: 83922 + 394 = 84316
Step 215: 84316 + 394 = 84710
Step 216: 84710 + 394 = 85104
Step 217: 85104 + 394 = 85498
Step 218: 85498 + 394 = 85892
Step 219: 85892 + 394 = 86286
Step 220: 86286 + 394 = 86680
Step 221: 86680 + 394 = 87074
Step 222: 87074 + 394 = 87468
Step 223: 87468 + 394 = 87862
Step 224: 87862 + 394 = 88256
Step 225: 88256 + 394 = 88650
Step 226: 88650 + 394 = 89044
Step 227: 89044 + 394 = 89438
Step 228: 89438 + 394 = 89832
Step 229: 89832 + 394 = 90226
Step 230: 90226 + 394 = 90620
Step 231: 90620 + 394 = 91014
Step 232: 91014 + 394 = 91408
Step 233: 91408 + 394 = 91802
Step 234: 91802 + 394 = 92196
Step 235: 92196 + 394 = 92590
Step 236: 92590 + 394 = 92984
Step 237: 92984 + 394 = 93378
Step 238: 93378 + 394 = 93772
Step 239: 93772 + 394 = 94166
Step 240: 94166 + 394 = 94560
Step 241: 94560 + 394 = 94954
Step 242: 94954 + 394 = 95348
Step 243: 95348 + 394 = 95742
Step 244: 95742 + 394 = 96136
Step 245: 96136 + 394 = 96530
Step 246: 96530 + 394 = 96924
Step 247: 96924 + 394 = 97318
Step 248: 97318 + 394 = 97712
Step 249: 97712 + 394 = 98106
Step 250: 98106 + 394 = 98500
Step 251: 98500 + 394 = 98894
Step 252: 98894 + 394 = 99288
Step 253: 99288 + 394 = 99682
Step 254: 99682 + 394 = 100076
Step 255: 100076 + 394 = 100470
Step 256: 100470 + 394 = 100864
Step 257: 100864 + 394 = 101258
Step 258: 101258 + 394 = 101652
Step 259: 101652 + 394 = 102046
Step 260: 102046 + 394 = 102440
Step 261: 102440 + 394 = 102834
Step 262: 102834 + 394 = 103228
Step 263: 103228 + 394 = 103622
Step 264: 103622 + 394 = 104016
Step 265: 104016 + 394 = 104410
Step 266: 104410 + 394 = 104804
Step 267: 104804 + 394 = 105198
Step 268: 105198 + 394 = 105592
Step 269: 105592 + 394 = 105986
Step 270: 105986 + 394 = 106380
Step 271: 106380 + 394 = 106774
Step 272: 106774 + 394 = 107168
Step 273: 107168 + 394 = 107562
Step 274: 107562 + 394 = 107956
Step 275: 107956 + 394 = 108350
Step 276: 108350 + 394 = 108744
Step 277: 108744 + 394 = 109138
Step 278: 109138 + 394 = 109532
Step 279: 109532 + 394 = 109926
Step 280: 109926 + 394 = 110320
Step 281: 110320 + 394 = 110714
Step 282: 110714 + 394 = 111108
Step 283: 111108 + 394 = 111502
Step 284: 111502 + 394 = 111896
Step 285: 111896 + 394 = 112290
Step 286: 112290 + 394 = 112684
Step 287: 112684 + 394 = 113078
Step 288: 113078 + 394 = 113472
Step 289: 113472 + 394 = 113866
Step 290: 113866 + 394 = 114260
Step 291: 114260 + 394 = 114654
Step 292: 114654 + 394 = 115048
Step 293: 115048 + 394 = 115442
Step 294: 115442 + 394 = 115836
Step 295: 115836 + 394 = 116230
Step 296: 116230 + 394 = 116624
Step 297: 116624 + 394 = 117018
Step 298: 117018 + 394 = 117412
Step 299: 117412 + 394 = 117806
Step 300: 117806 + 394 = 118200
Step 301: 118200 + 394 = 118594
Step 302: 118594 + 394 = 118988
Step 303: 118988 + 394 = 119382
Step 304: 119382 + 394 = 119776
Step 305: 119776 + 394 = 120170
Step 306: 120170 + 394 = 120564
Step 307: 120564 + 394 = 120958
Step 308: 120958 + 394 = 121352
Step 309: 121352 + 394 = 121746
Step 310: 121746 + 394 = 122140
Step 311: 122140 + 394 = 122534
Step 312: 122534 + 394 = 122928
Step 313: 122928 + 394 = 123322
Step 314: 123322 + 394 = 123716
Step 315: 123716 + 394 = 124110
Step 316: 124110 + 394 = 124504
Step 317: 124504 + 394 = 124898
Step 318: 124898 + 394 = 125292
Step 319: 125292 + 394 = 125686
Step 320: 125686 + 394 = 126080
Step 321: 126080 + 394 = 126474
Step 322: 126474 + 394 = 126868
Step 323: 126868 + 394 = 127262
Step 324: 127262 + 394 = 127656
Step 325: 127656 + 394 = 128050
Step 326: 128050 + 394 = 128444
Step 327: 128444 + 394 = 128838
Step 328: 128838 + 394 = 129232
Step 329: 129232 + 394 = 129626
Step 330: 129626 + 394 = 130020
Step 331: 130020 + 394 = 130414
Step 332: 130414 + 394 = 130808
Step 333: 130808 + 394 = 131202
Step 334: 131202 + 394 = 131596
Step 335: 131596 + 394 = 131990
Step 336: 131990 + 394 = 132384
Step 337: 132384 + 394 = 132778
Step 338: 132778 + 394 = 133172
Step 339: 133172 + 394 = 133566
Step 340: 133566 + 394 = 133960

So, 394*340 = 133960